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++ // Copyright (C) 2018 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
++ // Qt-Security score:critical reason:network-protocol
++
++ #include "dmabufserverbufferintegration.h"
++
++ #include <QtOpenGL/QOpenGLTexture>
++ #include <QtGui/QOpenGLContext>
++
++ #include <drm_fourcc.h>
++ #include <unistd.h>
++
++ QT_BEGIN_NAMESPACE
++
++ DmaBufServerBuffer::DmaBufServerBuffer(DmaBufServerBufferIntegration *integration, const QImage &qimage, QtWayland::ServerBuffer::Format format)
++ : QtWayland::ServerBuffer(qimage.size(),format)
++ , m_integration(integration)
++ {
++ m_format = format;
++
++ EGLContext eglContext = eglGetCurrentContext();
++
++ m_texture = new QOpenGLTexture(qimage);
++
++ m_image = m_integration->eglCreateImageKHR(eglContext, EGL_GL_TEXTURE_2D_KHR, (EGLClientBuffer)(unsigned long)m_texture->textureId(), nullptr);
++
++ qCDebug(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer created egl image" << m_image;
++
++ int err = eglGetError();
++ if (err != EGL_SUCCESS || m_image == EGL_NO_IMAGE_KHR)
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer error creating EGL image" << Qt::hex << err;
++
++ // TODO: formats with more than one plane
++
++ int num_planes = 1;
++
++ if (!m_integration->eglExportDMABUFImageQueryMESA(m_image, &m_fourcc_format, &num_planes, nullptr)) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: Failed to query egl image";
++ qCDebug(qLcWaylandCompositorHardwareIntegration) << "error" << Qt::hex << eglGetError();
++ } else {
++ qCDebug(qLcWaylandCompositorHardwareIntegration) << "num_planes" << num_planes << "fourcc_format" << m_fourcc_format;
++ if (num_planes != 1) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: multi-plane formats not supported";
++ delete m_texture;
++ m_texture = nullptr;
++ m_integration->eglDestroyImageKHR(m_image);
++ m_image = EGL_NO_IMAGE_KHR;
++ return;
++ }
++ }
++
++ if (!m_integration->eglExportDMABUFImageMESA(m_image, &m_fd, &m_stride, &m_offset)) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: Failed to export egl image. Error code" << Qt::hex << eglGetError();
++ } else {
++ qCDebug(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer exported egl image: fd" << m_fd << "stride" << m_stride << "offset" << m_offset;
++ m_texture->release();
++ }
++ }
++
++ DmaBufServerBuffer::~DmaBufServerBuffer()
++ {
++ delete m_texture;
++
++ int err;
++ m_integration->eglDestroyImageKHR(m_image);
++ if ((err = eglGetError()) != EGL_SUCCESS)
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "~DmaBufServerBuffer: eglDestroyImageKHR error" << Qt::hex << err;
++
++ err = ::close(m_fd);
++ if (err)
++ perror("~DmaBufServerBuffer:: error closing fd");
++
++ }
++
++ struct ::wl_resource *DmaBufServerBuffer::resourceForClient(struct ::wl_client *client)
++ {
++ auto *bufferResource = resourceMap().value(client);
++ if (!bufferResource) {
++ auto integrationResource = m_integration->resourceMap().value(client);
++ if (!integrationResource) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer::resourceForClient: Trying to get resource for ServerBuffer. But client is not bound to the qt_dmabuf_server_buffer interface";
++ return nullptr;
++ }
++ struct ::wl_resource *dmabuf_integration_resource = integrationResource->handle;
++
++ Resource *resource = add(client, 1);
++ m_integration->send_server_buffer_created(dmabuf_integration_resource, resource->handle, m_fd, m_size.width(), m_size.height(), m_stride, m_offset, m_fourcc_format);
++ return resource->handle;
++ }
++ return bufferResource->handle;
++ }
++
++
++ QOpenGLTexture *DmaBufServerBuffer::toOpenGlTexture()
++ {
++ if (!m_texture) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer::toOpenGlTexture: no texture defined";
++ }
++ return m_texture;
++ }
++
++ bool DmaBufServerBuffer::bufferInUse()
++ {
++ return resourceMap().size() > 0;
++ }
++
++ DmaBufServerBufferIntegration::DmaBufServerBufferIntegration()
++ {
++ }
++
++ DmaBufServerBufferIntegration::~DmaBufServerBufferIntegration()
++ {
++ }
++
++ bool DmaBufServerBufferIntegration::initializeHardware(QWaylandCompositor *compositor)
++ {
++ Q_ASSERT(QGuiApplication::platformNativeInterface());
++
++ m_egl_display = static_cast<EGLDisplay>(QGuiApplication::platformNativeInterface()->nativeResourceForIntegration("egldisplay"));
++ if (!m_egl_display) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "Cannot initialize dmabuf server buffer integration. Missing egl display from platform plugin";
++ return false;
++ }
++
++ const char *extensionString = eglQueryString(m_egl_display, EGL_EXTENSIONS);
++ if (!extensionString || !strstr(extensionString, "EGL_KHR_image")) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. There is no EGL_KHR_image extension.";
++ return false;
++ }
++
++ m_egl_create_image = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>(eglGetProcAddress("eglCreateImageKHR"));
++ m_egl_destroy_image = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>(eglGetProcAddress("eglDestroyImageKHR"));
++ if (!m_egl_create_image || !m_egl_destroy_image) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not resolve eglCreateImageKHR or eglDestroyImageKHR";
++ return false;
++ }
++
++ m_gl_egl_image_target_texture_2d = reinterpret_cast<PFNGLEGLIMAGETARGETTEXTURE2DOESPROC>(eglGetProcAddress("glEGLImageTargetTexture2DOES"));
++ if (!m_gl_egl_image_target_texture_2d) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find glEGLImageTargetTexture2DOES.";
++ return false;
++ }
++
++ m_egl_export_dmabuf_image_query = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC>(eglGetProcAddress("eglExportDMABUFImageQueryMESA"));
++ if (!m_egl_export_dmabuf_image_query) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find eglExportDMABUFImageQueryMESA.";
++ return false;
++ }
++
++ m_egl_export_dmabuf_image = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEMESAPROC>(eglGetProcAddress("eglExportDMABUFImageMESA"));
++ if (!m_egl_export_dmabuf_image) {
++ qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find eglExportDMABUFImageMESA.";
++ return false;
++ }
++
++ QtWaylandServer::qt_dmabuf_server_buffer::init(compositor->display(), 1);
++ return true;
++ }
++
++ bool DmaBufServerBufferIntegration::supportsFormat(QtWayland::ServerBuffer::Format format) const
++ {
++ // TODO: 8-bit format support
++ switch (format) {
++ case QtWayland::ServerBuffer::RGBA32:
++ return true;
++ case QtWayland::ServerBuffer::A8:
++ return false;
++ default:
++ return false;
++ }
++ }
++
++ QtWayland::ServerBuffer *DmaBufServerBufferIntegration::createServerBufferFromImage(const QImage &qimage, QtWayland::ServerBuffer::Format format)
++ {
++ return new DmaBufServerBuffer(this, qimage, format);
++ }
++
++ void DmaBufServerBuffer::server_buffer_release(Resource *resource)
++ {
++ qCDebug(qLcWaylandCompositorHardwareIntegration) << "server_buffer RELEASE resource" << resource->handle << wl_resource_get_id(resource->handle) << "for client" << resource->client();
++ wl_resource_destroy(resource->handle);
++ }
++
++ QT_END_NAMESPACE